Long before commuters could cross Mobile Bay in minutes, getting from Mobile to the Eastern Shore meant boarding a boat. Today the route is carried by the Cochrane Bridge, the Causeway, the Bankhead Tunnel and the George Wallace Tunnel, four pieces of infrastructure built over the last hundred years that reshaped how people move around the region.
Before the Cochrane Bridge and Causeway opened on June 14, 1927, crossing the bay required a ride on a bay boat. Fares ran between $3.50 and $6 for the roughly ten-mile trip, a price that would translate to somewhere between $45 and $78 in today’s dollars. That cost alone made a land route an attractive proposition for anyone traveling regularly between Mobile and Baldwin County.
A downtown bridge connection was floated as early as the 1930s as planners looked for a more direct route between Mobile and the Eastern Shore. The idea drew pushback from residents and business owners who worried a bridge through the heart of the city would disrupt commerce along the Mobile River, damage the waterfront’s scenic character and displace existing businesses along the banks.
The Bankhead Tunnel and the later George Wallace Tunnel were both built using the same unusual method. Concrete tubes were constructed on land in Mobile, then floated out into the river. Workers climbed into the submerged sections through a hatch in the ceiling to complete work inside, while barges kept the tubes buoyant as concrete was added and the structures gradually settled into place on the riverbed.
By 1951, engineers with the Mobile firm Palmer & Baker Inc., who had consulted on the Bankhead Tunnel, were already predicting the region would need a second underwater crossing within five years to keep pace with growing traffic. Their early proposal called for the new tunnel to run south of the Bankhead and to be dedicated to eastbound traffic, while the original tunnel would continue handling traffic headed west into Mobile. That basic east-west split between the two tunnels is largely how the crossings still function today.
Together, the four crossings replaced what was once a slow and costly boat trip with a network capable of moving thousands of vehicles a day, a change that helped knit Mobile and Baldwin County’s Eastern Shore into the single commuting region residents know now.